Genetics Home Reference (GHR) provides free access to consumer-friendly information on medical genetics to patients and their family members, health care professionals, and the public. The site offers summaries for a broad range of inherited conditions or disorders caused by gene alterations. Each condition summary includes the causes, available genetic testing, and links to summaries on related genes. Descriptions of genes include gene names and their synonyms, normal function, chromosome location, and an explanation of any disorder-causing mutations. Additionally, GHR provides a genetics glossary, help on understanding genetics, and links to many useful consumer, support, and research organizations. GHR is a service of the U.S. National Library of Medicine at the National Institutes of Health.

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Chromosome Disorder Outreach, Inc. (CDO) is a non-profit organization for families affected by any type of rare chromosome disorder: deletions, translocations, trisomies, rings and inversions.

Promega Corporation is a worldwide leader in applying biochemistry and molecular biology to the development of innovative, high-value products for the life sciences. The Promega mission statement is: To be the most responsive supplier of biological reagents and reagent systems used in research and applied technology applications worldwide.

Unique - Rare Chromosome Disorder Support Group for families affected by any rare chromosome disorder such as deletions, duplications, translocations, trisomy, monosomy, rings, mosaic, inversion, isodicentric, microdeletions, tetrasomy, monosomy, congenital, inherited

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